发明名称 |
Method and system for controlling torque in an electric drive powertrain |
摘要 |
This disclosure provides a method of controlling an electric drive powertrain system. The method includes providing an electric motor capable of running between a motor minimum speed and a motor maximum speed such that the electric motor can produce different amounts of torque between a first region defined between the motor minimum speed and a motor base speed and a second region defined between the motor base speed and the motor maximum speed. The method includes receiving a signal from operator inputs and determining a desired transmission output torque based on the signal received from the operator inputs. The method also includes determining a desired motor torque based on the desired transmission output torque, operating the electric motor at a current corresponding to the desired motor torque and producing a greater amount of torque at the motor base speed than at the motor minimum speed. |
申请公布号 |
US9227525(B2) |
申请公布日期 |
2016.01.05 |
申请号 |
US201314053154 |
申请日期 |
2013.10.14 |
申请人 |
DEERE & COMPANY |
发明人 |
Fleege Trent A.;Worley Stacy K.;Vilar Eric |
分类号 |
B60L15/20;B60L15/10;H02P29/02 |
主分类号 |
B60L15/20 |
代理机构 |
Taft Stettinius & Hollister LLP |
代理人 |
Taft Stettinius & Hollister LLP ;Rost Stephen F. |
主权项 |
1. A method of controlling an electric drive powertrain system of a machine, the machine including an inverter, a transmission having a plurality of selectable gears, and a transmission control unit including a memory unit and a processor, comprising:
providing an electric motor capable of running between a motor minimum speed and a motor maximum speed, the electric motor configured to produce torque between a first region defined between the motor minimum speed and a motor base speed and a second region defined between the motor base speed and the motor maximum speed; receiving a signal from one or more operator control inputs; determining a desired transmission output torque based on the signal received from the one or more operator inputs; determining a desired motor torque based on the desired transmission output torque; while operating the electric motor in the first region, controllably operating the electric motor at a current less than or equal to an amount of current required at a maximum motor torque at the motor base speed; and producing a greater amount of torque at the motor base speed than an amount of torque produced at the motor minimum speed. |
地址 |
Moline IL US |